>From my usage, the first question you should ask your customer is how much of a performance hit they can spare when switching to ZFS for Oracle. I've done lots of tweaking (following threads I've read on the mailing list), but I still can't seem to get enough performance out of any databases on ZFS. I've tried using zvols, cooked files on top of ZFS filesystems, everything, but either raw disk devices via the old style DiskSuite tools or cooked files on top of the same are far more performant than anything on ZFS. Your mileage may vary, but so far, that's where I stand.
As for the corrupted filesystem, ZFS is much better, but there are still no guarantees that your filesystem won't be corrupted during a hard shutdown. The CoW and checksumming gives you a much lower incidence of corruption, but the customer still needs to be made aware that things like battery backed controllers, managed UPS, redundant power supplies, and the like are the first thing they need to put into place - not the last. On Mon, Jun 23, 2008 at 11:56 AM, Mertol Ozyoney <[EMAIL PROTECTED]> wrote: > Hi All ; > > > > One of our customer is suffered from FS being corrupted after an unattanded > shutdonw due to power problem. > > They want to switch to ZFS. > > > > From what I read on, ZFS will most probably not be corrupted from the same > event. But I am not sure how will Oracle be affected from a sudden power > outage when placed over ZFS ? > > > > Any comments ? > > > > PS: I am aware of UPS's and smilar technologies but customer is still > asking those if ... questions ... > > > > Mertol > > > > > > > > [image: http://www.sun.com/emrkt/sigs/6g_top.gif] <http://www.sun.com/> > > *Mertol Ozyoney * > Storage Practice - Sales Manager > > *Sun Microsystems, TR* > Istanbul TR > Phone +902123352200 > Mobile +905339310752 > Fax +902123352222 > Email [EMAIL PROTECTED] <[EMAIL PROTECTED]> > > > > > > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss > > -- chris -at- microcozm -dot- net === Si Hoc Legere Scis Nimium Eruditionis Habes
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